Liquid crystal polyester resin composition

Abstract

An object is to provide a liquid crystal polyester resin composition capable of producing a molding in which the generation amount of particles is sufficiently reduced. The present invention provides a liquid crystal polyester resin composition including (1) a liquid crystal polyester, and (2) a fiber-shaped filler having a fiber diameter of 5 to 15 μm and a number average fiber length of 30 to 200 μm, wherein the content of a fiber having a fiber length of more than 200 μm is 10% by mass or less based on 100% by mass of the amount of the fiber-shaped filler.

What is claimed is: 
     
       1. A liquid crystal polyester resin composition comprising:
 (1) a liquid crystal polyester, and 
 (2) a fiber-shaped filler having a fiber diameter of 5 to 15 μm and a number average fiber length of 30 to 200 μm, wherein the content of a fiber having a fiber length of more than 200 μm is 10% by mass or less based on 100% by mass of the amount of the fiber-shaped filler. 
 
     
     
       2. The liquid crystal polyester resin composition according to  claim 1 , wherein the liquid crystal polyester is a liquid crystal polyester including repeating units represented by the following general formulas (1), (2) and (3):
   —O—Ar 1 —CO—,  (1)
 
   —CO—Ar 2 —CO—,  (2)
 
   —X—Ar 3 —Y—, and  (3)
 
   —Ar 4 —Z—Ar 5 —  (4)
 
 
       wherein Ar 1  is a phenylene group, a naphthylene group or a biphenylylene group; Ar 2  and Ar 3  each independently represents a phenylene group, a naphthylene group, a biphenylylene group, or a group represented by the general formula (4); X and Y each independently represents an oxygen atom or an imino group; Ar 4  and Ar 5  each independently represents a phenylene group or a naphthylene group; Z is an oxygen atom, a sulfur atom, a carbonyl group, a sulfonyl group or an alkylidene group; hydrogen atoms in Ar 1 , Ar 2  or Ar 3  each independently may be substituted with a halogen atom, an alkyl group or an aryl group. 
     
     
       3. The liquid crystal polyester resin composition according to  claim 2 , wherein the liquid crystal polyester is a liquid crystal polyester including a repeating unit represented by the general formula (1) in the amount of 30 to 80 units, a repeating unit represented by the general formula (2) in the amount of 10 to 35 units and a repeating unit represented by the general formula (3) in the amount of 10 to 35 units, based on 100 units in total of repeating units represented by the general formulas (1), (2) and (3). 
     
     
       4. The liquid crystal polyester resin composition according to  claim 2 , wherein X and Y in the general formula (3) are oxygen atoms.